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Home >> Chrysler >> 2001 >> Sebring Coupe L4-2.4L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Diagnosis By Symptom >> Symptom Procedures >> Inspection Procedure N-1

Inspection Procedure N-1

Theft-alarm system: Theft-alarm system is not armed (security indicator light does not illuminate).

Security Indicator Light Drive Circuit:




Connectors:






CIRCUIT OPERATION
The theft-alarm system will be armed after the doors are locked and then the security indicator light has illuminated for approximately 18 seconds.

TECHNICAL DESCRIPTION (COMMENT)
The ETACS-ECU arms the theft-alarm system according to the input signals from the following switches:
- Ignition key reminder switch
- Driver's and passenger's door switch
- Door switches
- Driver's and passenger's door key cylinder switch
- Driver's and front passenger's door lock actuator switch
- Trunk lid latch switch
- Trunk lid lock key cylinder switch
- Transmitter

If the theft-alarm system is armed normally, the relevant input signal circuit(s), the theft-alarm indicator light or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS
- Malfunction of the combination meter (security indicator light bulb or printed-circuit board)
- Malfunction of the ignition key reminder switch
- Malfunction of the driver's or passenger's door switch
- Malfunction of the door switches
- Malfunction of the driver's or passenger's door lock key cylinder switch
- Malfunction of the driver's or passenger's door lock actuator switch
- Malfunction of the trunk lid latch switch
- Malfunction of the trunk lid lock key cylinder switch
- Malfunction of the transmitter
- Malfunction of the ETACS-ECU
- Damaged harness wires or connectors

DIAGNOSIS

Required Special Tools:
- MB991223: Test Harness Set
- MB991502: Scan Tool (MUT-II)
- MB991529: Diagnostic Trouble Code Check Harness

STEP 1. Check the ETACS-ECU power supply circuit.
Do all of the following functions work when the ignition switch is turned to the "LOCK" (OFF) position?
- Ignition key reminder tone alarm function
- Light reminder tone alarm function
- Central door locking system
- Hazard warning light
- Interior light dimming function

Q: Do any of the functions work?

YES: Go to Step 2.
NO: Check the ETACS-ECU battery circuit. Refer to Inspection Procedure P-1.

STEP 2. Check the security indicator circuit at the ETACS-ECU connector C-312.
1. Disconnect the ETACS-ECU connector C-312 and measure at the harness side.




2. Connect terminal 39 to the ground.

Q: Does the security indicator light illuminate?

YES: Go to Step 10 or 11 .
NO: Go to Step 3.




STEP 3. Check the security indicator light bulb.

Q: Is the security indicator light bulb in good condition?

YES: Go to Step 4.
NO: Replace it. The security indicator light should illuminate, and the theft-alarm system should be armed normally.

STEP 4. Check the combination meter (printed-circuit board).
1. Remove the combination meter.
2. Remove the seat belt warning light bulb. The measure the resistance between the bulb terminals.




3. Install the bulb to the combination meter, and then measure the resistance between connector C-102 terminal 30 and 31. The resistance reading at this time should be muck the same as the resistance measured at Step (2).

Q: Are the two resistance values extremely different each other?

YES: Repair or replace the combination meter (printed-circuit board). The security indicator light should illuminate, and the theft-alarm system should be armed normally.
NO: Go to Step 5.

STEP 5. Check the combination meter power supply circuit at the combination meter connector C-102.
1. Disconnect the combination meter connector C-102 and measure at the harness side.




2. Measure the voltage between terminal 31 and ground.

Q: Is the voltage approximately 12 volts (battery positive voltage)?

YES: Go to Step 8.
NO: Go to Step6.




STEP 6. Check combination meter connector C-102 for damage.

Q: Is combination meter connector C-102 in good condition?

YES: Go to Step 7.
NO: Repair or replace it. Refer to Harness Connector Inspection. The security indicator light should illuminate, and the theft-alarm system should be armed normally.










STEP 7. Check the harness wires between combination meter connector C-102 and battery.

NOTE: After checking junction block connectors C-308 and C-310, joint connector C-141 and intermediate connector C-209, check the wires. If junction block connectors C-308 and C-310, joint connector C-141 and intermediate connector C-209 are damaged, repair or replace them. Refer to Harness Connector Inspection.

Q: Are the harness wires between combination meter connector C-102 and battery in good condition?

YES: There is no action to be taken.
NO: Repair or replace them. The security indicator light should illuminate, and the theft-alarm system should be armed normally.







STEP 8. Check combination meter connector C-102 and ETACS-ECU connector C-312 for damage.

Q: Are combination meter connector C-102 and ETACS-ECU connector C-312 in good condition?

YES: Go to Step 9.
NO: Repair or replace them. Refer to Harness Connector Inspection. The security indicator light should illuminate, and the theft-alarm system should be armed normally.







STEP 9. Check the harness wire between combination meter connector C-102 and ETACS-ECU connector C-312.

Q: Is the harness wire between combination meter connector C-102 and ETACS-ECU connector C-312 in good condition?

YES: There is no action to be taken.
NO: Repair it. The security indicator light should illuminate, and the theft-alarm system should be armed normally.

STEP 10. Check the input signal (by using scan tool MB991502).
Check the input signals from the following switches:
- Ignition key reminder switch
- Driver's and passenger's door switch
- Door switches
- Driver's and passenger's door key cylinder switch
- Driver's and front passenger's door lock actuator switch
- Trunk lid latch switch
- Trunk lid lock key cylinder switch
- Transmitter

CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.




1. Connect scan tool MB991502 to the data link connector.
2. Check that the tone alarm of scan tool MB991502 sounds when the input signal enters.

Q: Does the tone alarm of scan tool MB991502 sound when the input signal enters?

YES: Replace the ETACS-ECU. The security indicator light should illuminate, and the theft-alarm system should be armed normally.
NO: Check the relevant input signal circuit.

STEP 11. Check the input signal (by using a voltmeter).
Check the input signals from the following switches:
- Ignition key reminder switch
- Driver's and passenger's door switch
- Door switches
- Driver's and passenger's door key cylinder switch
- Driver's and front passenger's door lock actuator switch
- Trunk lid latch switch
- Trunk lid lock key cylinder switch
- Transmitter




1. Use special tool MB991529 to connect a voltmeter between ground terminal 4 or 5 and ETACS-ECU terminal 9 of the data link connector.
2. Check that the voltmeter indicator deflects once when the input signal enters.

Q: Does the voltmeter indicator deflect?

YES: Replace the ETACS-ECU. The security indicator light should illuminate, and the theft-alarm system should be armed normally.
NO: Check the relevant input signal circuit.
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